watchNS/pixiv.netについて、ここに記述してください。
Domain Name: PIXIV.NET Registrar: KEY-SYSTEMS GMBH Whois Server: whois.rrpproxy.net Referral URL: http://www.key-systems.net Name Server: NS1.PIXIV.NET Name Server: NS2.PIXIV.NET Status: ok Updated Date: 20-may-2011 Creation Date: 16-jul-2007 Expiration Date: 16-jul-2019
1. 04-30
pixiv.net. 172800 IN NS ns1.pixiv.net. pixiv.net. 172800 IN NS ns2.pixiv.net. ;; ADDITIONAL SECTION: ns1.pixiv.net. 172800 IN A 210.140.131.236 ns2.pixiv.net. 172800 IN A 210.140.131.238
2. pixiv.net
$ dnsq any pixiv.net a.gtld-servers.net
255 pixiv.net: 95 bytes, 1+0+2+2 records, response, noerror query: 255 pixiv.net authority: pixiv.net 172800 NS ns1.pixiv.net authority: pixiv.net 172800 NS ns2.pixiv.net additional: ns1.pixiv.net 172800 A 210.168.27.46 additional: ns2.pixiv.net 172800 A 210.168.27.79
$ dnsqr a pixiv.net
1 pixiv.net: 191 bytes, 1+6+2+2 records, response, noerror query: 1 pixiv.net answer: pixiv.net 240 A 113.33.39.195 answer: pixiv.net 240 A 125.100.191.29 answer: pixiv.net 240 A 210.168.27.16 answer: pixiv.net 240 A 210.168.27.49 answer: pixiv.net 240 A 210.168.27.81 answer: pixiv.net 240 A 210.168.27.106 authority: pixiv.net 240 NS ns1.pixiv.net authority: pixiv.net 240 NS ns2.pixiv.net additional: ns1.pixiv.net 240 A 210.168.27.46 additional: ns2.pixiv.net 240 A 210.168.27.79
TTLが短い。NSレコードが問題だ。
3. 旧DNS
$ dnsq any pixiv.net dns1.name-services.com
255 pixiv.net: 328 bytes, 1+8+0+5 records, response, authoritative, noerror query: 255 pixiv.net answer: pixiv.net 3600 A 69.64.147.243 answer: pixiv.net 3600 MX 10 p.nsm.ctmail.com answer: pixiv.net 3600 SOA dns1.name-services.com info.name-services.com 2002050701 10001 1801 604801 181 answer: pixiv.net 3600 NS dns1.name-services.com answer: pixiv.net 3600 NS dns2.name-services.com answer: pixiv.net 3600 NS dns3.name-services.com answer: pixiv.net 3600 NS dns4.name-services.com answer: pixiv.net 3600 NS dns5.name-services.com additional: dns1.name-services.com 3600 A 98.124.192.1 additional: dns2.name-services.com 3600 A 98.124.197.1 additional: dns3.name-services.com 3600 A 98.124.193.1 additional: dns4.name-services.com 3600 A 98.124.194.1 additional: dns5.name-services.com 3600 A 98.124.196.1